WO1995004954A1 - Systeme de projection d'images pour spectateurs en mouvement - Google Patents

Systeme de projection d'images pour spectateurs en mouvement Download PDF

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Publication number
WO1995004954A1
WO1995004954A1 PCT/BR1994/000027 BR9400027W WO9504954A1 WO 1995004954 A1 WO1995004954 A1 WO 1995004954A1 BR 9400027 W BR9400027 W BR 9400027W WO 9504954 A1 WO9504954 A1 WO 9504954A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminas
observer
frameworks
picture
focus
Prior art date
Application number
PCT/BR1994/000027
Other languages
English (en)
Inventor
Carlos Augusto Cavalcanti Loureiro
Original Assignee
Loureiro Carlos Augusto Cavalc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Loureiro Carlos Augusto Cavalc filed Critical Loureiro Carlos Augusto Cavalc
Publication of WO1995004954A1 publication Critical patent/WO1995004954A1/fr

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
    • G09F2019/221—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated on tunnel walls for underground trains

Definitions

  • twinkling frequency is high, becoming possible a continuity from picture to picture, similar to that one afforded by the shutter of a motion picture projector.
  • Retinal Persistence-Images that light end' extinguish within a time interval minor than a twentieth of a second, are perceived by us as if they did not extinguish.
  • the human eye because it has a time of post-stimulus, joins a stimulus to the other one immediatly posterior, since in presence of the above mentioned frequency.
  • the materials of which the laminas would be made, the unique requirement is that their thickness be the minimal possible, in order to avoid a great interference in the images that will be seen through them, as they will be numerous: about two laminas per each centimeter of the image width, approximately 7,5 centimeters (seven centimeters and a half) of each lemina width.
  • plastic materiel as it is already produced in reduced) thickness (as a card credit type), with a good handling in the fabrication, durability, and specifically cheaper and lighter than the metals, would be appropriate for the above mentioned! requirement.
  • the minimum required) light, quantity to be: irradiated! from the panel In order that the images can be; seen from within a train car, for instance, must be fourfold! to fivefold) the light quantity in the local where the observer is situated. In the subway train cars (Sao Paulo) the light quantity is about 200 lux, what indicates a light, required quantity irradiated from the panel around 800 and 1000 lux. A quantity that would not be difficult to get through fluorescent electric lamps without occurring light spots, in spite of an installation in very narrow places (minimal distance electric lamp/"screen" approximately 10 centimeters (ten centimeters)).
  • the "panel" in which the images will be printed or painted may be of plastic material ( transparent or translucent) , malleable ( a kind of a textured vinyl manta, coated with PVC and nylon, used nowadays in illuminated! advertisements or similar ones) , or of acrilyc material plasts or similar ones (translucent or transparent) .
  • the emplacement of the manta (covering) in the chassis of the illuminated advertisements will be done opening the frameworks (figures 5, 6 and 7, number 15) , unrolling the "film” ( figures 1, 3, 4, 5, 6 and 7, number 11) from a bobbin ( figure 7, number 14) , in the opening of the frameworks, from where it will be fixed in the chassis, toy means of "'velcro " ribbons ( figures 5, 6 and 7, number 16) , sticked in the chassis and in the manta
  • the frameworks are closed ( figures 5 end 6, number 17) and when they are braked ( figures 5 and 6, number 17) they will press the manta (covering) and the "velcro" ribbons preventing so that they be loosed with eventual abrupt air movements.
  • the illuminated advertisement illustration (figure 2 and 5, number 13) shows, amidst other things, its fixation on columns.
  • the lamina focus (figure 1, number 6), in this case, is right-angled (orthogonal) in relation to the image (figure 4, number 2). But, if being better for the means of transportation that the focus of vision angle in relation to the image from the windows be more restrict, for instance in trains only for sitting persons it will be adopted a more convenient focus vision angle in relation to the image.
  • the images picture to picture represent, as an example?, the sequency along a route nearby a subway station, which will give directions to the passenfers, as soon as they arrives to the surface.
  • Invention Patent is the framework formed by laminas focalized towards a point where would be situated an observer, and the appliances, in which it is employed sequentially (in lamp-shades, luminaries, pendant lamps or in tunnels, railways etc.).
  • Translucent acrilyc diffusers or similar ones? Vinyl covering or another translucent plastic covering? Or a transparent one?
  • variable involved in such cases are numerous, finding a solution, and reaching' a prototype within a real scale, with high costs, without the risk that the project fall into public property.
  • the light distribution will ocur in a more homogeneous and economic way, within a very narrower space, making possible to install a projector inside locals as wide as a pizza of a, thin layer dough.

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

Système comportant une succession de cadres (1) dont chacun est constitué de lamelles verticales (5) s'étendant dans des plans qui convergent sur un foyer (6) correspondant, dans ce cas, à la position d'un spectateur se déplaçant parallèlement au plan des cadres. Par conséquent, le spectateur ne peut apercevoir une succession d'images qui, normalement, sont floues et se confondent sur les murs d'un tunnel de chemin de fer souterrain (à cause de la vitesse de la rame), que lorsqu'il se trouve dans la position correspondant au foyer (6) des lamelles, et chaque image, aperçue à travers les lamelles (5), semblera scintiller devant lui au lieu d'être en défilement. Etant donné que, dans les cas de ce type, la vitesse est élevée, la fréquence de scintillement est également élevée, et l'on obtient une continuité entre images semblable à celle assurée par l'obturateur d'un projecteur cinématographique.
PCT/BR1994/000027 1993-08-10 1994-08-10 Systeme de projection d'images pour spectateurs en mouvement WO1995004954A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI9303052 1993-08-10
BR9303052A BR9303052A (pt) 1993-08-10 1993-08-10 Projetor de imagens para observadores em movimento

Publications (1)

Publication Number Publication Date
WO1995004954A1 true WO1995004954A1 (fr) 1995-02-16

Family

ID=4056987

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR1994/000027 WO1995004954A1 (fr) 1993-08-10 1994-08-10 Systeme de projection d'images pour spectateurs en mouvement

Country Status (2)

Country Link
BR (1) BR9303052A (fr)
WO (1) WO1995004954A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US978854A (en) * 1909-11-29 1910-12-20 Waclaw Czerniewski Apparatus for producing animated pictures by the movement of vehicles.
US2299731A (en) * 1940-04-16 1942-10-27 Arendt Morton Display system for moving vehicles
FR1008912A (fr) * 1950-01-20 1952-05-23 Procédé publicitaire et dispositifs pour sa réalisation
DE2264652A1 (de) * 1972-10-27 1974-08-15 Schoenbach Dieter Verfahren und vorrichtung zur steuerung der einschaltfrequenzen von lichtquellen zur erzeugung eines bewegten bildeindruckes bei einem bewegten betrachter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US978854A (en) * 1909-11-29 1910-12-20 Waclaw Czerniewski Apparatus for producing animated pictures by the movement of vehicles.
US2299731A (en) * 1940-04-16 1942-10-27 Arendt Morton Display system for moving vehicles
FR1008912A (fr) * 1950-01-20 1952-05-23 Procédé publicitaire et dispositifs pour sa réalisation
DE2264652A1 (de) * 1972-10-27 1974-08-15 Schoenbach Dieter Verfahren und vorrichtung zur steuerung der einschaltfrequenzen von lichtquellen zur erzeugung eines bewegten bildeindruckes bei einem bewegten betrachter

Also Published As

Publication number Publication date
BR9303052A (pt) 1995-03-07

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